So that sealant they use for the tail lights is pretty much concrete! I can't seem to get it hot enough to make it gooey. I'm not sure what to do. I've tried the oven at 220*F for half an hour and it still isn't getting hot enough.

Has anyone had any luck with that stuff? By the way, before anyone asks, I'm taking them apart so I can add LED's to the inner lights.

 

try a dremel and a steady hand. other than that i dunno